1. Sanja Petronic, Serbia
Investigation was carried out on the iron base superalloy, that are widely used at elevated temperatures and pressures. After their exposition to aggressive mediums –HCl and HNO3 acids, the laser surface treatment was applied with the aim of materials recovery. The Nd3+ :YAG laser process characteristics were: wavelength 532 nm, pulse energy 37 mJ, while the pulse frequency varied – 1, 2 and 4Hz. The samples were observed by scanning electron microscopy (SEM) and analyzed by energo-dispersive spectrometry (EDS). Vickers microhardness tests were performed. In this paper, microstructures arising after various pulse frequencies were analyzed and compared.
Thematic field:
Proizvodne tehnologije i inženjerstvo
Opening paper:
Yes
Date:
04.04.2011.
Number of visits:
745
11th International Conference on Accomplishments in Mechanical and Industrial Engineering
Paper file
(8.03 MB)
